USGS monitors make it impossible to learn new science about the mechanisms of earthquakes and volcanic activity. <br />These "new" seismograms of theirs show 220% less detail than the old ones did. <br /> <br />So you can really forget about seeing harmonic tremors on them now. <br /> <br />http://isthisthingon.org/Yellowstone/keep-calm.php <br />http://quake.utah.edu/monitoring-research/station-map <br />http://isthisthingon.org/Yellowstone/daythumbs.php